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69 Appendix C
DI15 ~ DI0 Digital input data
DI0 The least significant bit (LSB) of the DI data
DI15 The most significant bit (MSB)
C.9 D/A Output — BASE+04/05H
Write-only registers BASE+04H and BASE+05H accept data for D/A
output.
The PCI-1718 cards provide one D/A output channel with two double-
buffered 12-bit multiplying D/A converters. Write registers at addresses
BASE+04H and BASE+05H hold output data. DA0 is the least signifi-
cant bit (LSB) and DA11 is the most significant bit (MSB) of the D/A
data.
Table C.10: Register for Digital Output
Read Digital Input
Bit # 76543210
BASE + 03H DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
BASE + 0BH DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
Note: Digital Outputs D0 - D3 is selectable from the
20-pin connector or the 37-pin D connector.
Please refer to chapter 2 for details.
Table C.11: Register for D/A Output
Write D/A output data
Bit # 76543210
BASE + 04H DA3 DA2 DA1 DA0 X X X X
BASE + 05H DA11 DA10 DA9 DA8 DA7 DA6 DA5 DA4